thebespokepixel/truwrap

/* ─────────────────────╮
 │ truwrap panel writer │
 ╰──────────────────────┴────────────────────────────────────────────────────── */
/* eslint unicorn/no-array-for-each:0 */

import _ from 'lodash'

/**
 * Organise a block of delimited text into a panel
 * @private
 * @param  {string} buffer_ Input plain text.
 * @param  {string} delimiter_ Field delimiter.
 * @param  {number} width_ Panel width.
 * @return {Object} The columnify configuration.
 */
export default function panel(buffer_, delimiter_, width_) {
    let longIdx = 0
    let maxCols = 0
    const spacerCols = []
    const tableData = []

    _.forEach(_.split(buffer_.trim(), '\n'), (row, rowIdx) => {
        const columnData = {}

        _.forEach(_.split(row, delimiter_), (col, colIdx) => {
            if (col === ':space:') {
                spacerCols.push(colIdx)
                columnData[`spacer${colIdx}`] = ' '
            } else if (spacerCols.includes(colIdx)) {
                columnData[`spacer${colIdx}`] = ' '
            } else {
                columnData[`c${colIdx}`] = col
            }

            if (colIdx > maxCols) {
                maxCols = colIdx
                longIdx = rowIdx
            }
        })

        tableData.push(columnData)
    })

    const setSpacer = (spacerSize, min) =>
        _.max([
            Math.floor((width_
                - (spacerCols.length * spacerSize))
                / (maxCols - spacerCols.length + 1),
            ),
            min,
        ]) - 1

    const configuration = {}
    const max = setSpacer(16, 5)
    const min = setSpacer(4, 3)

    for (const idx of Object.keys(tableData[longIdx])) {
        if (idx.includes('spacer')) {
            configuration[idx] = {
                maxWidth: 16,
                minWidth: 4,
            }
        } else {
            configuration[idx] = {
                maxWidth: _.max([min, max]),
                minWidth: _.min([min, max]),
            }
        }
    }

    return {
        content: tableData,
        configuration,
    }
}